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33results about How to "Impact efficiency" patented technology

Device and method for fast block-matching motion estimation in video encoders

Motion estimation is the science of predicting the current frame in a video sequence from the past frame (or frames), by slicing it into rectangular blocks of pixels, and matching these to past such blocks. The displacement in the spatial position of the block in the current frame with respect to the past frame is called the motion vector. This method of temporally decorrelating the video sequence by finding the best matching blocks from past reference frames—motion estimation—makes up about 80% or more of the computation in a video encoder. That is, it is enormously expensive, and methods do so that are efficient are in high demand. Thus the field of motion estimation within video coding is rich in the breadth and diversity of approaches that have been put forward. Yet it is often the simplest methods that are the most effective. So it is in this case. While it is well-known that a full search over all possible positions within a fixed window is an optimal method in terms of performance, it is generally prohibitive in computation. In this patent disclosure, we define an efficient, new method of searching only a very sparse subset of possible displacement positions (or motion vectors) among all possible ones, to see if we can get a good enough match, and terminate early. This set of sparse subset of motion vectors is preselected, using a priori knowledge and extensive testing on video sequences, so that these “predictors” for the motion vector are essentially magic. The art of this method is the preselection of excellent sparse subsets of vectors, the smart thresholds for acceptance or rejection, and even in the order of the testing prior to decision.
Owner:FASTVDO

Method for Planning a Cellular Mobile Telecommunications Network

A method for planning a cellular mobile telecommunications network includes at least one network cell and is intended to provide network services to users located in the network cell. The method includes: a) initializing, for the at least one network cell, a service area and a transmission power for each user equipment; b) estimating a total power received by the at least one network cell from user equipment located in the service area and using the at least one network service; c) based on the estimated total received power, varying the transmission powers required to user equipment located in the service area in order to reach a target quality of service constraint for the at least one network service; d) iterating the steps b) and c) until a stability condition is reached wherein the transmission power variation for at least a predetermined fraction of the user equipment is lower than a predetermined threshold; e) calculating a total received power corresponding to the transmission powers at the end of step d); f) calculating an uplink load factor corresponding to the total received power calculated in step e); g) ascertaining whether the calculated uplink load factor is lower than a maximum uplink load factor, and, in the negative case: h) restricting said service area; and i) repeating the steps from b) to g).
Owner:TELECOM ITALIA SPA
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